buttbate
The act of violently shoving your thumb into your asshole and shitting as you do it, this is usually done for sexual pleasure. (Male or female)
Me: Dude, I just buttbated, it was amazing.
Billy: Does your thumb stink?
Me: (Sniffs thumb) FUCK YES! There's fucking shit all over my hand! I forgot to clean up I guess...
Billy: Does your thumb stink?
Me: (Sniffs thumb) FUCK YES! There's fucking shit all over my hand! I forgot to clean up I guess...
buttbating
when a male masturbates only using his butt, and makes girl noises, heterosexualy
bro 1: Bruh! I heard Todd crushing some snizz through the wall last night.
bro 2: nah cuz....He was just buttbating
bro 2: nah cuz....He was just buttbating